5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
[ Upstream commit e5c7bcb499840551cfbe85c6df177ebc50432bf0 ]
Documentation says only DTDL of 200 is allowed for this SoC.
Fixes: 4286db8456f4 ("spi: sh-msiof: Add R-Car Gen 2 and 3 fallback bindings")
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Link: https://msgid.link/r/20231212081239.14254-1-wsa+renesas@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/spi/spi-sh-msiof.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index 8f134735291f..edb26b085706 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -32,12 +32,15 @@
#include <asm/unaligned.h>
+#define SH_MSIOF_FLAG_FIXED_DTDL_200 BIT(0)
+
struct sh_msiof_chipdata {
u32 bits_per_word_mask;
u16 tx_fifo_size;
u16 rx_fifo_size;
u16 ctlr_flags;
u16 min_div_pow;
+ u32 flags;
};
struct sh_msiof_spi_priv {
@@ -1072,6 +1075,16 @@ static const struct sh_msiof_chipdata rcar_gen3_data = {
.min_div_pow = 1,
};
+static const struct sh_msiof_chipdata rcar_r8a7795_data = {
+ .bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16) |
+ SPI_BPW_MASK(24) | SPI_BPW_MASK(32),
+ .tx_fifo_size = 64,
+ .rx_fifo_size = 64,
+ .ctlr_flags = SPI_CONTROLLER_MUST_TX,
+ .min_div_pow = 1,
+ .flags = SH_MSIOF_FLAG_FIXED_DTDL_200,
+};
+
static const struct of_device_id sh_msiof_match[] = {
{ .compatible = "renesas,sh-mobile-msiof", .data = &sh_data },
{ .compatible = "renesas,msiof-r8a7743", .data = &rcar_gen2_data },
@@ -1082,6 +1095,7 @@ static const struct of_device_id sh_msiof_match[] = {
{ .compatible = "renesas,msiof-r8a7793", .data = &rcar_gen2_data },
{ .compatible = "renesas,msiof-r8a7794", .data = &rcar_gen2_data },
{ .compatible = "renesas,rcar-gen2-msiof", .data = &rcar_gen2_data },
+ { .compatible = "renesas,msiof-r8a7795", .data = &rcar_r8a7795_data },
{ .compatible = "renesas,msiof-r8a7796", .data = &rcar_gen3_data },
{ .compatible = "renesas,rcar-gen3-msiof", .data = &rcar_gen3_data },
{ .compatible = "renesas,sh-msiof", .data = &sh_data }, /* Deprecated */
@@ -1317,6 +1331,9 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
return -ENXIO;
}
+ if (chipdata->flags & SH_MSIOF_FLAG_FIXED_DTDL_200)
+ info->dtdl = 200;
+
if (info->mode == MSIOF_SPI_SLAVE)
ctlr = spi_alloc_slave(&pdev->dev,
sizeof(struct sh_msiof_spi_priv));
--
2.43.0
